Urea 250grm
Urea for biochemistry. CAS No. 57-13-6, EC Number 200-315-5.
Manufacturer: Merck
Catalog ID: 108488.0250
Stock: In Stock
Description
| Catalogue Number | 108488 |
| Synonyms | Carbamide, Carbonyl diamide, Diaminomethanone, Carbonyldiamine |
Product Information
| CAS number | 57-13-6 |
| EC number | 200-315-5 |
| Hill Formula | CH₄N₂O |
| Chemical formula | CO(NH₂)₂ |
| Molar Mass | 60.06 g/mol |
| HS Code | 3105 10 00 |
Applications
| Application | Urea for biochemistry. CAS No. 57-13-6, EC Number 200-315-5. |
Physicochemical Information
| Density | 1.34 g/cm3 (20 °C) |
| Melting Point | 133 °C |
| pH value | 9 (100 g/l, H₂O, 20 °C) |
| Vapor pressure | <0.1 hPa (20 °C) |
| Bulk density | 720 - 760 kg/m3 |
| Solubility | 1000 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 8471 mg/kg |
| LD 50 dermal | LD50 Rat 8200 mg/kg |
Storage and Shipping Information
| Storage | Store at +15°C to +30°C. |
Specifications
| Purity (DSC (differential scanning calorimetry)) | ≥ 99.5 % |
| Identity (IR-spectrum) | passes test |
| Appearance | Colorless crystals or white crystalline powder. |
| Appearance of solution (100 g/l, water) | Clear and colorless. |
| Melting point (DSC (differential scanning calorimetry)) | 132 - 135 °C |
| UV-Absorption (260 nm; 8 mol/l; 1 cm; water) | ≤ 0.1 |
| UV-Absorption (280 nm; 8 mol/l; 1 cm; water) | ≤ 0.1 |
| Cyanide (CN) | ≤ 0.000001 % |
| Chloride (Cl) | ≤ 0.0005 % |
| Sulfate (SO₄) | ≤ 0.001 % |
| Heavy metals (as Pb) | ≤ 0.0004 % |
| Fe (Iron) | ≤ 0.00002 % |
| NH₄ (Ammonium) | ≤ 0.00001 % |
| Biuret | ≤ 0.05 % |
| Sulfated ash (800 °C) | ≤ 0.01 % |
